Warning: some of these devices run from 12V, but nevertheless produce
voltages high enough to shock and, under most conditions, may even cause severe damage to your health.
So be careful.

Remember to use bleeder resistors for all high voltage (over 40V) capacitors.

Never get close to or
touch any operating HV device. Use plastic or grounded operation panels.

Build or use any devices presented here entirely at your own risk.

Additionally please note that despite my best efforts the device
descriptions given on this site may be flawed or information might be
missing, so always think for yourself first. If anything regarding HV is
unclear then _ask_ someone, to lessen chances of getting yourself killed in
some mindbogglingly embarrassing way.